Lucene search

K
mskbMicrosoftKB5001979
HistoryJul 13, 2021 - 7:00 a.m.

Description of the security update for Office 2016: July 13, 2021 (KB5001979)

2021-07-1307:00:00
Microsoft
support.microsoft.com
21
microsoft office 2016
security update
feature bypass vulnerability
microsoft update
microsoft update catalog
microsoft download center

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS3

8.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

AI Score

8

Confidence

High

EPSS

0.004

Percentile

72.9%

Description of the security update for Office 2016: July 13, 2021 (KB5001979)

Summary

This security update resolves a Microsoft Office security feature bypass vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-34469.

**Note:**To apply this security update, you must have the release version of Microsoft Office 2016 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn’t apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home (see What version of Office am I using?).

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

More information

Security update deployment information

For deployment information about this update, see Security update deployment information: July 13, 2021.

Security update replacement information

This security update replaces previously released security update 5001950.

File hash information

File name SHA256 hash
mso2016-kb5001979-fullfile-x86-glb.exe 1AB033E098EE645AFA102C04A6D7AEAC356B0FEFDA75FD237F94267E663569D6
mso2016-kb5001979-fullfile-x64-glb.exe 95700F47B1AA89A01B5DCA5CD243453252BF333B1B0A598CE9CE17FB47269A60

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

__

For all supported x86-based versions of Office 2016

File identifier File name File version File size Date Time
firstrun.exe firstrun.exe 16.0.5149.1000 774440 15-Jun-21 08:20
msointl.dll.x86.1025 msointl.dll 16.0.4927.1000 3287904 16-Jun-21 11:09
msointl.dll.x86.1026 msointl.dll 16.0.4927.1000 1886048 16-Jun-21 11:12
msointl.dll.x86.1027 msointl.dll 16.0.4927.1000 1817952 16-Jun-21 11:29
msointl.dll.x86.1029 msointl.dll 16.0.4927.1000 1928032 16-Jun-21 11:36
msointl.dll.x86.1030 msointl.dll 16.0.4927.1000 1758040 16-Jun-21 11:09
msointl.dll.x86.1031 msointl.dll 16.0.4927.1000 1948216 16-Jun-21 11:09
msointl.dll.x86.1032 msointl.dll 16.0.4927.1000 2057048 16-Jun-21 11:09
msointl.dll.x86.3082 msointl.dll 16.0.4927.1000 1826360 16-Jun-21 11:09
msointl.dll.x86.1061 msointl.dll 16.0.4927.1000 1731664 16-Jun-21 11:09
msointl.dll.x86.1069 msointl.dll 16.0.4927.1000 1740640 16-Jun-21 11:29
msointl.dll.x86.1035 msointl.dll 16.0.4927.1000 1738504 16-Jun-21 11:09
msointl.dll.x86.1036 msointl.dll 16.0.4927.1000 1975360 16-Jun-21 11:09
msointl.dll.x86.1110 msointl.dll 16.0.4927.1000 1774648 16-Jun-21 11:29
msointl.dll.x86.1095 msointl.dll 16.0.4927.1000 1830688 16-Jun-21 11:29
msointl.dll.x86.1037 msointl.dll 16.0.4927.1000 2907936 16-Jun-21 11:09
msointl.dll.x86.1081 msointl.dll 16.0.4927.1000 1952312 16-Jun-21 11:36
msointl.dll.x86.1050 msointl.dll 16.0.4927.1000 1742088 16-Jun-21 11:09
msointl.dll.x86.1038 msointl.dll 16.0.4927.1000 1951584 16-Jun-21 11:13
msointl.dll.x86.1057 msointl.dll 16.0.4927.1000 1621848 16-Jun-21 11:13
msointl.dll.x86.1040 msointl.dll 16.0.4927.1000 1766240 16-Jun-21 11:09
msointl.dll.x86.1041 msointl.dll 16.0.4927.1000 2012512 16-Jun-21 11:36
msointl.dll.x86.1087 msointl.dll 16.0.4927.1000 2103648 16-Jun-21 11:36
msointl.dll.x86.1099 msointl.dll 16.0.4927.1000 1940320 16-Jun-21 11:30
msointl.dll.x86.1042 msointl.dll 16.0.4927.1000 2768736 16-Jun-21 11:10
msointl.dll.x86.1063 msointl.dll 16.0.4927.1000 1845808 16-Jun-21 11:10
msointl.dll.x86.1062 msointl.dll 16.0.4927.1000 1832016 16-Jun-21 11:36
msointl.dll.x86.1086 msointl.dll 16.0.4927.1000 1649232 16-Jun-21 11:10
msointl.dll.x86.1044 msointl.dll 16.0.4927.1000 1721624 16-Jun-21 11:36
msointl.dll.x86.1043 msointl.dll 16.0.4927.1000 1771264 16-Jun-21 11:10
msointl.dll.x86.1045 msointl.dll 16.0.4927.1000 1917280 16-Jun-21 11:10
msointl.dll.x86.1046 msointl.dll 16.0.4927.1000 1829656 16-Jun-21 11:36
msointl.dll.x86.2070 msointl.dll 16.0.4927.1000 1836312 16-Jun-21 11:36
msointl.dll.x86.1048 msointl.dll 16.0.4927.1000 1963064 16-Jun-21 11:10
msointl.dll.x86.1049 msointl.dll 16.0.4927.1000 1904384 16-Jun-21 11:36
msointl.dll.x86.1051 msointl.dll 16.0.4927.1000 1971552 16-Jun-21 11:13
msointl.dll.x86.1060 msointl.dll 16.0.4927.1000 1807712 16-Jun-21 11:13
msointl.dll.x86.2074 msointl.dll 16.0.4927.1000 1765936 16-Jun-21 11:10
msointl.dll.x86.9242 msointl.dll 16.0.4927.1000 1794912 16-Jun-21 11:10
msointl.dll.x86.1053 msointl.dll 16.0.4927.1000 1734912 16-Jun-21 11:10
msointl.dll.x86.1054 msointl.dll 16.0.4927.1000 1827376 16-Jun-21 11:36
msointl.dll.x86.1055 msointl.dll 16.0.4927.1000 1998680 16-Jun-21 11:10
msointl.dll.x86.1058 msointl.dll 16.0.4927.1000 1891896 16-Jun-21 11:10
msointl.dll.x86.1066 msointl.dll 16.0.4927.1000 2005552 16-Jun-21 11:10
msointl.dll.x86.2052 msointl.dll 16.0.4927.1000 2321704 16-Jun-21 11:10
msointl.dll.x86.1028 msointl.dll 16.0.4927.1000 2329384 16-Jun-21 11:10
msores.dll msores.dll 16.0.4795.1000 81683304 15-Jun-21 08:19
msores.dll.x86 msores.dll 16.0.4795.1000 81683304 15-Jun-21 08:22
mso.dll.x86 mso.dll 16.0.5188.1000 14422416 17-Jun-21 12:28
msointl.dll.x86.1033 msointl.dll 16.0.4927.1000 1539640 15-Jun-21 08:21

__

For all supported x64-based versions of Office 2016

File identifier File name File version File size Date Time
firstrun.exe firstrun.exe 16.0.5149.1000 816928 15-Jun-21 08:21
msointl.dll.x64.1025 msointl.dll 16.0.5188.1000 3324808 17-Jun-21 12:57
msointl.dll.x64.1026 msointl.dll 16.0.5188.1000 1910152 17-Jun-21 12:32
msointl.dll.x64.1027 msointl.dll 16.0.5188.1000 1842008 17-Jun-21 12:50
msointl.dll.x64.1029 msointl.dll 16.0.5188.1000 1952088 17-Jun-21 12:57
msointl.dll.x64.1030 msointl.dll 16.0.5188.1000 1782128 17-Jun-21 12:57
msointl.dll.x64.1031 msointl.dll 16.0.5188.1000 1972608 17-Jun-21 12:57
msointl.dll.x64.1032 msointl.dll 16.0.5188.1000 2081640 17-Jun-21 12:57
msointl.dll.x64.3082 msointl.dll 16.0.5188.1000 1850752 17-Jun-21 12:57
msointl.dll.x64.1061 msointl.dll 16.0.5188.1000 1755528 17-Jun-21 12:32
msointl.dll.x64.1069 msointl.dll 16.0.5188.1000 1764720 17-Jun-21 12:50
msointl.dll.x64.1035 msointl.dll 16.0.5188.1000 1762672 17-Jun-21 12:57
msointl.dll.x64.1036 msointl.dll 16.0.5188.1000 1999208 17-Jun-21 12:57
msointl.dll.x64.1110 msointl.dll 16.0.5188.1000 1799048 17-Jun-21 12:51
msointl.dll.x64.1095 msointl.dll 16.0.5188.1000 1854856 17-Jun-21 12:51
msointl.dll.x64.1037 msointl.dll 16.0.5188.1000 2944840 17-Jun-21 12:57
msointl.dll.x64.1081 msointl.dll 16.0.5188.1000 1976664 17-Jun-21 12:57
msointl.dll.x64.1050 msointl.dll 16.0.5188.1000 1766256 17-Jun-21 12:57
msointl.dll.x64.1038 msointl.dll 16.0.5188.1000 1975664 17-Jun-21 12:32
msointl.dll.x64.1057 msointl.dll 16.0.5188.1000 1645936 17-Jun-21 12:32
msointl.dll.x64.1040 msointl.dll 16.0.5188.1000 1790832 17-Jun-21 12:57
msointl.dll.x64.1041 msointl.dll 16.0.5188.1000 2036592 17-Jun-21 12:57
msointl.dll.x64.1087 msointl.dll 16.0.5188.1000 2128208 17-Jun-21 12:57
msointl.dll.x64.1099 msointl.dll 16.0.5188.1000 1964400 17-Jun-21 12:51
msointl.dll.x64.1042 msointl.dll 16.0.5188.1000 2793328 17-Jun-21 12:57
msointl.dll.x64.1063 msointl.dll 16.0.5188.1000 1869680 17-Jun-21 12:57
msointl.dll.x64.1062 msointl.dll 16.0.5188.1000 1855872 17-Jun-21 12:57
msointl.dll.x64.1086 msointl.dll 16.0.5188.1000 1673552 17-Jun-21 12:33
msointl.dll.x64.1044 msointl.dll 16.0.5188.1000 1745264 17-Jun-21 12:57
msointl.dll.x64.1043 msointl.dll 16.0.5188.1000 1795464 17-Jun-21 12:57
msointl.dll.x64.1045 msointl.dll 16.0.5188.1000 1941360 17-Jun-21 12:57
msointl.dll.x64.1046 msointl.dll 16.0.5188.1000 1853776 17-Jun-21 12:57
msointl.dll.x64.2070 msointl.dll 16.0.5188.1000 1860464 17-Jun-21 12:57
msointl.dll.x64.1048 msointl.dll 16.0.5188.1000 1986928 17-Jun-21 12:57
msointl.dll.x64.1049 msointl.dll 16.0.5188.1000 1928072 17-Jun-21 12:57
msointl.dll.x64.1051 msointl.dll 16.0.5188.1000 1996144 17-Jun-21 12:33
msointl.dll.x64.1060 msointl.dll 16.0.5188.1000 1832304 17-Jun-21 12:33
msointl.dll.x64.2074 msointl.dll 16.0.5188.1000 1790320 17-Jun-21 12:57
msointl.dll.x64.9242 msointl.dll 16.0.5188.1000 1818992 17-Jun-21 12:57
msointl.dll.x64.1053 msointl.dll 16.0.5188.1000 1759088 17-Jun-21 12:57
msointl.dll.x64.1054 msointl.dll 16.0.5188.1000 1851264 17-Jun-21 12:57
msointl.dll.x64.1055 msointl.dll 16.0.5188.1000 2023280 17-Jun-21 12:57
msointl.dll.x64.1058 msointl.dll 16.0.5188.1000 1915760 17-Jun-21 12:57
msointl.dll.x64.1066 msointl.dll 16.0.5188.1000 2029936 17-Jun-21 12:33
msointl.dll.x64.2052 msointl.dll 16.0.5188.1000 2346296 17-Jun-21 12:57
msointl.dll.x64.1028 msointl.dll 16.0.5188.1000 2353968 17-Jun-21 12:57
msointl.dll.x86.1025 msointl.dll 16.0.4927.1000 3287904 16-Jun-21 11:09
msointl.dll.x86.1026 msointl.dll 16.0.4927.1000 1886048 16-Jun-21 11:12
msointl.dll.x86.1029 msointl.dll 16.0.4927.1000 1928032 16-Jun-21 11:36
msointl.dll.x86.1030 msointl.dll 16.0.4927.1000 1758040 16-Jun-21 11:09
msointl.dll.x86.1031 msointl.dll 16.0.4927.1000 1948216 16-Jun-21 11:36
msointl.dll.x86.1032 msointl.dll 16.0.4927.1000 2057048 16-Jun-21 11:09
msointl.dll.x86.3082 msointl.dll 16.0.4927.1000 1826360 16-Jun-21 11:36
msointl.dll.x86.1061 msointl.dll 16.0.4927.1000 1731664 16-Jun-21 11:09
msointl.dll.x86.1035 msointl.dll 16.0.4927.1000 1738504 16-Jun-21 11:09
msointl.dll.x86.1036 msointl.dll 16.0.4927.1000 1975360 16-Jun-21 11:09
msointl.dll.x86.1037 msointl.dll 16.0.4927.1000 2907936 16-Jun-21 11:09
msointl.dll.x86.1081 msointl.dll 16.0.4927.1000 1952312 16-Jun-21 11:36
msointl.dll.x86.1050 msointl.dll 16.0.4927.1000 1742088 16-Jun-21 11:09
msointl.dll.x86.1038 msointl.dll 16.0.4927.1000 1951584 16-Jun-21 11:13
msointl.dll.x86.1057 msointl.dll 16.0.4927.1000 1621848 16-Jun-21 11:13
msointl.dll.x86.1040 msointl.dll 16.0.4927.1000 1766240 16-Jun-21 11:09
msointl.dll.x86.1041 msointl.dll 16.0.4927.1000 2012512 16-Jun-21 11:36
msointl.dll.x86.1087 msointl.dll 16.0.4927.1000 2103648 16-Jun-21 11:10
msointl.dll.x86.1042 msointl.dll 16.0.4927.1000 2768736 16-Jun-21 11:10
msointl.dll.x86.1063 msointl.dll 16.0.4927.1000 1845808 16-Jun-21 11:10
msointl.dll.x86.1062 msointl.dll 16.0.4927.1000 1832016 16-Jun-21 11:36
msointl.dll.x86.1086 msointl.dll 16.0.4927.1000 1649232 16-Jun-21 11:10
msointl.dll.x86.1044 msointl.dll 16.0.4927.1000 1721624 16-Jun-21 11:36
msointl.dll.x86.1043 msointl.dll 16.0.4927.1000 1771264 16-Jun-21 11:10
msointl.dll.x86.1045 msointl.dll 16.0.4927.1000 1917280 16-Jun-21 11:10
msointl.dll.x86.1046 msointl.dll 16.0.4927.1000 1829656 16-Jun-21 11:36
msointl.dll.x86.2070 msointl.dll 16.0.4927.1000 1836312 16-Jun-21 11:36
msointl.dll.x86.1048 msointl.dll 16.0.4927.1000 1963064 16-Jun-21 11:10
msointl.dll.x86.1049 msointl.dll 16.0.4927.1000 1904384 16-Jun-21 11:36
msointl.dll.x86.1051 msointl.dll 16.0.4927.1000 1971552 16-Jun-21 11:13
msointl.dll.x86.1060 msointl.dll 16.0.4927.1000 1807712 16-Jun-21 11:13
msointl.dll.x86.2074 msointl.dll 16.0.4927.1000 1765936 16-Jun-21 11:10
msointl.dll.x86.9242 msointl.dll 16.0.4927.1000 1794912 16-Jun-21 11:10
msointl.dll.x86.1053 msointl.dll 16.0.4927.1000 1734912 16-Jun-21 11:10
msointl.dll.x86.1054 msointl.dll 16.0.4927.1000 1827376 16-Jun-21 11:36
msointl.dll.x86.1055 msointl.dll 16.0.4927.1000 1998680 16-Jun-21 11:10
msointl.dll.x86.1058 msointl.dll 16.0.4927.1000 1891896 16-Jun-21 11:10
msointl.dll.x86.1066 msointl.dll 16.0.4927.1000 2005552 16-Jun-21 11:13
msointl.dll.x86.2052 msointl.dll 16.0.4927.1000 2321704 16-Jun-21 11:10
msointl.dll.x86.1028 msointl.dll 16.0.4927.1000 2329384 16-Jun-21 11:10
conversion.office.msores.dll msores.dll 16.0.4795.1000 81683088 15-Jun-21 08:16
msores.dll msores.dll 16.0.4795.1000 81683088 15-Jun-21 08:19
ppt.conversion.msores.dll msores.dll 16.0.4795.1000 81683088
ppt.edit.msores.dll msores.dll 16.0.4795.1000 81683088
wac.office.msores.dll msores.dll 16.0.4795.1000 81683088
msores.dll msores.dll 16.0.4795.1000 81683304 15-Jun-21 08:19
msores.dll.x86 msores.dll 16.0.4795.1000 81683304 15-Jun-21 08:22
mso.dll.x64 mso.dll 16.0.5188.1000 19880280 17-Jun-21 12:27
mso.dll.x86 mso.dll 16.0.5188.1000 14422416 17-Jun-21 12:28
msointl.dll.x64.1033 msointl.dll 16.0.4927.1000 1564424 15-Jun-21 08:16
msointl.dll.x86.1033 msointl.dll 16.0.4927.1000 1539640 15-Jun-21 08:18

Information about protection and security

Protect yourself online: Windows Security supportLearn how we guard against cyber threats: Microsoft Security

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS3

8.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

AI Score

8

Confidence

High

EPSS

0.004

Percentile

72.9%